<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>游戏大厅</title>
    <link rel="stylesheet" href="./css/common.css">
    <link rel="stylesheet" href="./css/game_hall.css">
</head>
<body>
    <div class="nav">网络五子棋对战游戏</div>
    <!-- 整个页面的容器元素 -->
    <div class="container">
        <!-- 这个 div 在 container 中是处于垂直水平居中这样的位置的 -->
        <div>
            <!-- 展示用户信息 -->
            <div id="screen"></div>
            <!-- 匹配按钮 -->
            <div id="match-button">开始匹配</div>
        </div>
    </div>

    <script src="./js/jquery.min.js"></script>
    <script>
        var ws_url = "ws://" + location.host + "/hall";
        var ws_hdl = null;

        window.onbeforeunload = function() 
        {
            ws_hdl.close();
        }
        // 按钮有两个状态：一个正在匹配 ，一个没有匹配
        var button_flag = "stop";
        // 点击按钮事件处理
        var be = document.getElementById("match-button");
        be.onclick = function()
        {
            // 1. 没有匹配的状态下，点击按钮，发送对战匹配的请求
            if(button_flag == "stop")
            {
                var req_json = { optype : "match_start" }
                ws_hdl.send(JSON.stringify(req_json));
            }
            // 2. 匹配的状态下，点击按钮，发送取消对战匹配的请求
            else
            {
                var req_json = { optype : "match_stop" }
                ws_hdl.send(JSON.stringify(req_json));
            }
        }
       
        function get_user_info()
        {
            $.ajax 
            ({
                url : "/info",
                type : "get",
                success : function(res)
                {   
                    var info_html = "<P>" + "玩家：" + res.username + " 天梯分数：" + res.score +
                        "</br>" + "总对战场次：" + res.total_count + " 获胜场次：" + res.win_count + "</p>";
                    var screen_div = document.getElementById("screen");
                    screen_div.innerHTML = info_html;

                    ws_hdl = new WebSocket(ws_url);
                    ws_hdl.onopen = ws_onopen;
                    ws_hdl.onclose = ws_onclose;
                    ws_hdl.onerror = ws_onerror;
                    ws_hdl.onmessage = ws_onmessage;

                },
                error : function(xhr)
                {
                    alert(JSON.stringify(xhr));
                    location.replace("/login.html");
                }
            })
        }
        function ws_onopen()
        {
            console.log("websocket onopen");
        }
        function ws_onclose()
        {
            console.log("websocket onclose");
        }
        function ws_onerror()
        {
            console.log("websocket onerror");
        }
        function ws_onmessage(evt)
        {
            var resp_json = JSON.parse(evt.data);
            if(resp_json.result == false)
            {
                alert(resp_json.reason);
                location.replace("/login.html");
                return;
            }
            if(resp_json["optype"] == "hall_ready")
            {
                alert(resp_json.reason);
            }
            else if(resp_json["optype"] == "match_success")
            {
                alert("匹配成功，进入游戏")
                location.replace("/game_room.html");
                return;
            }
            else if(resp_json["optype"] == "match_start")
            {
                console.log(resp_json.reason);
                button_flag = "start";
                be.innerHTML = "X 取消匹配 ";
                return ;
            }
            else if(resp_json["optype"] == "match_stop")
            {
                console.log(resp_json.reason);
                button_flag = "stop";
                be.innerHTML = " 开始匹配 ";
                return ;
            }
            else
            {
                alert(resp_json.reason);
                location.replace("/login.html");
                return;
            }
        }
        get_user_info();
    </script>
</body>
</html>